WO1983000062A1 - Method and device for controlling the pressure of a fluid and/or the amount per unit of time of a flow - Google Patents

Method and device for controlling the pressure of a fluid and/or the amount per unit of time of a flow Download PDF

Info

Publication number
WO1983000062A1
WO1983000062A1 PCT/NL1982/000020 NL8200020W WO8300062A1 WO 1983000062 A1 WO1983000062 A1 WO 1983000062A1 NL 8200020 W NL8200020 W NL 8200020W WO 8300062 A1 WO8300062 A1 WO 8300062A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
fluid
time
per unit
pressure
Prior art date
Application number
PCT/NL1982/000020
Other languages
French (fr)
Inventor
N.V. Conma
Original Assignee
Storm, Tonny
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Storm, Tonny filed Critical Storm, Tonny
Priority to AU85867/82A priority Critical patent/AU8586782A/en
Priority to BR8207764A priority patent/BR8207764A/en
Publication of WO1983000062A1 publication Critical patent/WO1983000062A1/en
Priority to DK0590/83A priority patent/DK59083D0/en
Priority to FI830495A priority patent/FI830495A0/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/022—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/10—Sequential burner running

Definitions

  • the invention relates to a method of controlling a pressure in a chamber, containing a liquid or gaseous fluid.
  • Controlling the pressure of a liquid or gas contai ⁇ ned in a chamber is performed by adjusting a flow section.
  • the magnitude of this flow section is dependent on the pres ⁇ sure of the fluid contained in the chamber and on the magni ⁇ tude of an adjustable spring tension.
  • An example of this is a reduction valve.
  • a disadvantage of this known method is the fact, that a variation of the selected pressure is only pos- sible by varying the spring tension. Expensive control mem ⁇ bers are required when applying this method in an,automatic control system.
  • the invention has the object of reducing the disad ⁇ vantages of the known method.
  • said chamber com- prises at least one supply or discharge member, which is fre ⁇ quently opened and closed alternatively.
  • the pressure prevailing in the chamber can be increased or de ⁇ creased.
  • a useful method of controlling the pressure of liquid or gases is obtained.
  • the frequency of opening and closing and/or the duration of opening said member can be selected in dependance on the prescribed pressure.
  • the method according to the invention can be used with burners, in which the amount of gaseous or liquid fuel per unit of time supplied to the burner is controlled. In this way the heat per unit of time delivered by the burner can be controlled exactly by controlling the pressure in the chamber in dependance on the temperature which is decisive for the produced heat.
  • the invention will be illucidated with reference to the accompanying scheme.
  • the measured value of the process 1 to be controlled e.g. a gas burner, is picked up by a tem-
  • OMPI perature sensor 2 The difference between this measured value and a value adjusted by means of a manually operated adjus ⁇ ting member 3 is supplied to a modulator 4 generating the signals for controlling the supply member 5.
  • a pressure In the chamber 6 a pressure will be obtained which is decisive for the amount of gas per unit of time flowing through the nozzle 7 of the burner.
  • the chamber 6 may have an outlet with a fixed cross section. A flow having a selected amount per unit of time flows through this outlet. This selected amount is the deter ⁇ mined amount required for producing the required quantity of heat for the process1. This amount per unit of time is depen ⁇ dent on the selected pressure in the chamber 6 when having a constant flow section of the outlet.
  • the pressure in the chamber 6 is determined by the amount of fluid supplied to the chamber 6 through the supply member 5 constituted by a control member.
  • This control member 5 is a valve which is periodically completely opened and completely closed. The amount of fluid per unit of time is adjusted by selecting the frequency of opening, and closing this valve during a deter ⁇ mined period of time or by selecting a period of time during each cycle of opening and closing the value when operating the valve with a fixed frequency.
  • the outlet of the chamber 6 may have an adjustable flow section.
  • the supply member 5 may consist of a pump, e.g. a plunjer pump, the number of strokes per unit of time and/or the output per stroke being adjustable.
  • a pump e.g. a plunjer pump
  • the chamber 6 prefe ⁇ rably comprises a cushion of air or gas constituting a spring.

Abstract

Fluid is received in a chamber with a determined pressure. A constant flow can be discharged from this chamber, when meanwhile fluid is supplied to said chamber through a repeatedly excitated control member, the duration of the supply of fluid per cycle or the frequency of excitations of said member being adjusted.

Description

Method and device for controlling the pressure of a fluid and/or the amount per unit of time of a flow.
The invention relates to a method of controlling a pressure in a chamber, containing a liquid or gaseous fluid.
Controlling the pressure of a liquid or gas contai¬ ned in a chamber is performed by adjusting a flow section. The magnitude of this flow section is dependent on the pres¬ sure of the fluid contained in the chamber and on the magni¬ tude of an adjustable spring tension. An example of this is a reduction valve. A disadvantage of this known method is the fact, that a variation of the selected pressure is only pos- sible by varying the spring tension. Expensive control mem¬ bers are required when applying this method in an,automatic control system.
The invention has the object of reducing the disad¬ vantages of the known method. To this aim said chamber com- prises at least one supply or discharge member, which is fre¬ quently opened and closed alternatively. In this way the pressure prevailing in the chamber can be increased or de¬ creased. As the amount of fluid per unit of time can be con¬ trolled easier by periodically opening and closing said supply or discharge member than by a continuous variation of a flow section, a useful method of controlling the pressure of liquid or gases is obtained. The frequency of opening and closing and/or the duration of opening said member can be selected in dependance on the prescribed pressure. The method according to the invention can be used with burners, in which the amount of gaseous or liquid fuel per unit of time supplied to the burner is controlled. In this way the heat per unit of time delivered by the burner can be controlled exactly by controlling the pressure in the chamber in dependance on the temperature which is decisive for the produced heat.
The invention will be illucidated with reference to the accompanying scheme. The measured value of the process 1 to be controlled, e.g. a gas burner, is picked up by a tem-
OMPI perature sensor 2. The difference between this measured value and a value adjusted by means of a manually operated adjus¬ ting member 3 is supplied to a modulator 4 generating the signals for controlling the supply member 5. In the chamber 6 a pressure will be obtained which is decisive for the amount of gas per unit of time flowing through the nozzle 7 of the burner.
The chamber 6 may have an outlet with a fixed cross section. A flow having a selected amount per unit of time flows through this outlet. This selected amount is the deter¬ mined amount required for producing the required quantity of heat for the process1. This amount per unit of time is depen¬ dent on the selected pressure in the chamber 6 when having a constant flow section of the outlet. The pressure in the chamber 6 is determined by the amount of fluid supplied to the chamber 6 through the supply member 5 constituted by a control member. This control member 5 is a valve which is periodically completely opened and completely closed. The amount of fluid per unit of time is adjusted by selecting the frequency of opening, and closing this valve during a deter¬ mined period of time or by selecting a period of time during each cycle of opening and closing the value when operating the valve with a fixed frequency.
With an alternative embodiment of the device accor- ding to the invention, the outlet of the chamber 6 may have an adjustable flow section.
The supply member 5 may consist of a pump, e.g. a plunjer pump, the number of strokes per unit of time and/or the output per stroke being adjustable. in case the fluid is a liquid the chamber 6 prefe¬ rably comprises a cushion of air or gas constituting a spring.

Claims

1. Method of controlling a pressure in a chamber, containing a liquid or gaseous fluid, characterized in that said chamber comprises at least one supply or discharge mem¬ ber, which is frequently opened and closed alternatively.
2. Method as claimed in claim 1, characterized in that the frequency of opening and closing said member is se¬ lected in dependance on a predetermined pressure.
3. Method as claimed in claim 1, characterized in that the duration of opening said member is selected in dependance on a predetermined pressure.
4. Method as claimed in any one of the preceding claims, characterized in that at least one supply or dis¬ charge member has a constant flow section.
5. Method as claimed in any one of the claims 1-3, characterized in that a discharge member is connected to a fuel nozzle of a burner for liquid or gaseous fluid.
6. Method as claimed in any one of claims 1-3, cha¬ racterized in that the supply or discharge member is consti¬ tuted by a pump.
7. Method of controlling the amount of fluid per unit of time of a flow, characterized in that fluid is supplied to a chamber through a periodically excitated con¬ trol member and is discharged from said chamber through an outlet as a flow having a selected amount of fluid per unit of time due to adjusting the pressure in the chamber at a selected pressure by repeatedly supplying a selected amount of fluid per cycle to said chamber and/or by repeatedly supplying determined amounts of fluid during a selected num¬ ber of cycles per unit of time.
8. Device for carrying out the method as defined in any one of the preceding claims, characterized by a chamber having at least one supply or discharge member provided with means for repeatedly opening and closing said member.
9. Device for controlling the amount per unit of
OMPI time of a flow, characterized by a chamber for receiving a fluid and by a control member connected to said chamber and being excitated periodically for periodically supplying fluid to said chamber, said chamber having a fluid outlet for dis- charging a flow having a selected amount per time unit from said chamber.
OMPI
PCT/NL1982/000020 1981-06-23 1982-06-22 Method and device for controlling the pressure of a fluid and/or the amount per unit of time of a flow WO1983000062A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU85867/82A AU8586782A (en) 1981-06-23 1982-06-22 Method and device for controlling the pressure of a fluid and/or the amount per unit of time of a flow
BR8207764A BR8207764A (en) 1981-06-23 1982-06-22 PROCESS AND DEVICE TO CONTROL THE PRESSURE OF A FLUID AND / OR THE QUANTITY OF A FLOW PER UNIT OF TIME
DK0590/83A DK59083D0 (en) 1981-06-23 1983-02-11 PROCEDURE AND APPARATUS FOR REGULATING A MEDIUM PRESSURE AND / OR FLOW QUANTITY
FI830495A FI830495A0 (en) 1981-06-23 1983-02-14 OVER ANGLE CONNECTION FOR OVER FLUIDS TRYCK OCH / ELLER PER TIDSENHET INTRAEFFANDE STROEMNINGSMAENGD

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8103022810623 1981-06-23
NL8103022A NL8103022A (en) 1981-06-23 1981-06-23 PRESSURE CONTROL METHOD.

Publications (1)

Publication Number Publication Date
WO1983000062A1 true WO1983000062A1 (en) 1983-01-06

Family

ID=19837679

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1982/000020 WO1983000062A1 (en) 1981-06-23 1982-06-22 Method and device for controlling the pressure of a fluid and/or the amount per unit of time of a flow

Country Status (9)

Country Link
EP (1) EP0068589A1 (en)
JP (1) JPS58501334A (en)
BR (1) BR8207764A (en)
DK (1) DK59083D0 (en)
ES (1) ES513346A0 (en)
NL (1) NL8103022A (en)
NO (1) NO830450L (en)
WO (1) WO1983000062A1 (en)
ZA (1) ZA824412B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5434395A (en) * 1990-03-05 1995-07-18 Jean-Rene Storck Method and device for effecting a transaction between a first and at least one second data carrier and carrier used for this purpose

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0255915B1 (en) * 1986-08-06 1991-04-17 Eppendorf-Netheler-Hinz Gmbh Flame photometer with constant stream regulation

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1177740A (en) * 1956-04-11 1959-04-29 Bosch Gmbh Robert Installation for spraying liquids and, in particular, fuels
FR1326126A (en) * 1962-06-21 1963-05-03 Hoganasmetoder Ab Oil or fuel oil heater for industrial furnaces
GB1016831A (en) * 1961-10-26 1966-01-12 Siegfried Kofnik A fuel distribution and regulation system for an oil-fired furnace or other oil-burning installation
FR2200487A1 (en) * 1972-09-14 1974-04-19 Vaillant Joh Kg
US3815813A (en) * 1971-05-26 1974-06-11 Saunier Duval Hot water heating system
DE2415207A1 (en) * 1974-03-29 1975-10-16 Leisenberg Manfred Ind Kg Air and fuel supply control to burners - has cut-off valves in supply-line, periodically opening at regulated frequency
FR2353019A1 (en) * 1976-05-25 1977-12-23 Erap Liq. fuel supply system for burner - has stop valve to deliver and interrupt for set short periods controlled by solenoid valve

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1177740A (en) * 1956-04-11 1959-04-29 Bosch Gmbh Robert Installation for spraying liquids and, in particular, fuels
GB1016831A (en) * 1961-10-26 1966-01-12 Siegfried Kofnik A fuel distribution and regulation system for an oil-fired furnace or other oil-burning installation
FR1326126A (en) * 1962-06-21 1963-05-03 Hoganasmetoder Ab Oil or fuel oil heater for industrial furnaces
US3815813A (en) * 1971-05-26 1974-06-11 Saunier Duval Hot water heating system
FR2200487A1 (en) * 1972-09-14 1974-04-19 Vaillant Joh Kg
DE2415207A1 (en) * 1974-03-29 1975-10-16 Leisenberg Manfred Ind Kg Air and fuel supply control to burners - has cut-off valves in supply-line, periodically opening at regulated frequency
FR2353019A1 (en) * 1976-05-25 1977-12-23 Erap Liq. fuel supply system for burner - has stop valve to deliver and interrupt for set short periods controlled by solenoid valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5434395A (en) * 1990-03-05 1995-07-18 Jean-Rene Storck Method and device for effecting a transaction between a first and at least one second data carrier and carrier used for this purpose

Also Published As

Publication number Publication date
NL8103022A (en) 1983-01-17
DK59083A (en) 1983-02-11
DK59083D0 (en) 1983-02-11
ES8308989A1 (en) 1983-10-01
BR8207764A (en) 1983-05-31
JPS58501334A (en) 1983-08-11
EP0068589A1 (en) 1983-01-05
ZA824412B (en) 1983-04-27
NO830450L (en) 1983-02-10
ES513346A0 (en) 1983-10-01

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